Wheel head and the like



w. LE R. BRYANT 1,755,238

WHEELHEAD AND THE LIKE Filpd NW9, 192e 2 sheetssheet 1- S a Sw m WWU/wrm April 22, 1930.

A'pril 22, 1930. w. LE BRYANT WHEELHEAD AND THE LIKE Filed Nov'. 9, 192e 2 sheets-sheet 2 Patented Api-,22,1930 i .a Y 1359238 u Umfrnn STAT v .rs-ns -f "seien l i i Wi-{LLIAM LERQYBRYANT, on srnrlserr"IEIJVD7 innivrorf'i :y l

y Y Ann THE LIKE i` n i Appiaanen mea november 9, 192s.V serial No. 1`47,3411. f

This inventionV rela-testo bearings forhigh 2 and shoulder' 9` onl each easing-i outwardly speed" shafts such aswheelheads for grinding of the' huh abutting against one of the end machines-'andihasfor'its ohjeotto provides'uch yfaces l0v of the fra-ine. These bearing nien'ijf ahearinglwhio'h Wifll bev of materially longer bers may be fixed-in position inany suitable f lifethan those heretofore constructed and eav- .man-ner, as for example by means of clamping 55 paloleofi'being'drivenat'higherl speeds. bolts'l *passing Ythrouzghv partsV ofthev Infa'- i 'Inl my' applieationifor patent,Serial-Ndl Chine frainep l; .Eachy of the members 7 is 1545753402 iled November 9,159.2@ for Ywheel-y shapedtov forni an-annn'lar socket portionlf headsandfthelile; sdsclose'dandelaimeda and im extension' 16 0f- Smaller diameter 211- bgarirng gonstgrutigni in which-.af Shaft gsupf. rangedv ooncentrioally with the, portion 15. (so

` port-edi onk largedaineter.portions; of rollers, This extension lfisprovided Wth-fan'nternal v theseroll'ersbengjonrnaied on smal-1 chiamaL annular bearings/e111? for-apurpo'sewhich ter portions Whi'ehyinthe Construction shown7 Will` later appear.y They outer .face ofthe turniinfnedbearings! By eansingfthelarge Socket portlenf 15 Vis'normally clese'dy O ff by Y '15 diameter*portionstobe larger thantheshafft cover plate 20, Whiehfornisthe other part 7G54 e5 panying'drawings.imvsrhiclnn` l `etienneter,the angirlarvelneiityojthe roller-sas 'Of the-hearing easing. This QOVIeIIibl' lways; less; than @at on the; shaft, and' the has-a reoess Ql'formed-thereimthisrecess havsnrfaee 'speedaolY the smal-Llibeazngs is further 111g en internal annular Wall portion 22 prefre'duee'd because ofi' their snialh diameter as erab'ly 1nv substantial alinenient-With the Wall eoniparedtothe larget di'ameterfportions of` POFOD l'thmlgholl ST @Iltleffl'Qumfeli l," v51h-y1rolflgrs:which,bm1-01111j1w Shaft ence. These Wall port-ions 16 and 22.; aoteas 'csoifdingf'tothe pres'entii'nventionthe ad-L tracks 0U' Whlh TDOVQ beafing POPOHSO Vantagesineidenittheuse'ofrollers having `.shaft supporting rollersyaswill later appear. lageadeainetier shaft:s1ipponting,'andsma11 l The Shaft eXt-erids axially tlirougrhftne dim'gtep begging; pD-Iytongjs retainedfx and bearings and isoonoentrioally relateidto the i rolli'e'nveloeity and? Vfrietioniare"further"ree Wall POTlnS-l'and'QQ- Y. y ,y i dueedlfby causingthehearingportons o-ffthe Sl'IlC'e 1H the embed'm'ent shown theA bear rcarersnoihavezroliinglratnenthanslidingfeom mg; 1S mended teen-raport a: grinding' wheelv With-their supportngl-'snrraces-` YMeans v -"='P1I1Cl1%l DlmS wref preferablyprovided'for ol-ftak-ingen'df thrust on thee-shaft and' for RJllfl'elllgl ille entnance'mof.abrading'par- '50 Vadlustngnnfwear'bothendtviseramd radially H0105 lItOithebe'flgS- FOlT-ths'pu'rpose2m y Offfthg'Shfnmgeyalgpbegpmvide n annular guardi 2571s shown as fixed against 1 For` gimme@,ompltmmdergtanding of thin a shoulder 26' at eaehgend of thesha'ftfa n'nty Y invention refr'ngemg-"y hajdt0 the-acmi or shoulder port-ion 27- hearing on: one. ofgthese Y f,Figureil;isailongtudinalsectionthrough'a usedas a drivingtpulley oria bnl@ and l Wheelliead showingfan einhodimentoffthis-inthe outer end of Which is-engaged-by annt 29 Y Vang-ion.. K threadedon t'heopposite'end of? the shaft-,f5

yFlignresffzfsa perspeeti-vefofftherollercarry? is s hownfls holding the opposite guard plate t 4g*- ingffgge-1, I 'Y l 25 1n positiony The outerrfaee offeacliof the 99 FigureB-is` ai crosssectionoinline 3'3.; of Cover plates 20,y and the corresponding guard Ffigumlgwf p i Y f Y plate"25-are-preferahly formed-With concen-l l1 in: Figure Lis indieated machine trieally arrangedl annular elevations and de` ra'me-'havinganopening@ eXtending'there-- pressions ini order to form aftor-tnons passage 15 through.. Q In; opposite endsf oft thissopening `from the periphery ofeach ofthe gua'irdfplates y -e hubjportion'extending'withinthe'opening: lefthand-endyo'f theAFigure" in bearing.

p'arieasing, o'neof these part-s as-li'aving-,aI-gConsefniently the constructionshown at the cover plates;v :Asleev'e 28, which may also @d Y l of bearing portions and 36 .of relatively small diameter and concentrically arranged with reference to the large diameter portions. As shown in Figure 1 the bearing portion 35 is of relatively short length, while the bearing portion 36 is much longer. The rollers are arranged in two circular series about the shaft 5. In one of these series, asl shown in the upper part of Figure 1, the short bearing portions-l5` are arranged to bear against the wall 22. and the bearing portions 36 against thewall16, and in the other, asV shown in thelower part of Figure 1, the rollers are reversed end for end, their bearing portions 35 engaging the wall 16 and their bearing portions 36 engaging the wall 22. rlhe large diameter portions of the two series are vpositioned closely adjacent and in lapping relation, as shown in Figure 3, and lie within the chamber 15. The tapered portion 31 of each roller of one series engages the shaft surface 32 and the corresponding portion of each roller of the other series engagesthe shaft surface 33 axially offset from the surface 32.

By holding each of the Vrollers against end wise motion in direction of its longer bearing 36, the shaft 5 is held from longitudinal motion. For this purpose the ends of the bearing portion 36V are preferably formed rounded as at 40, those of one series bearing against theannular base 41 of the member 3,

and those ofthe other series bearing against j a similar base portion A12 in the cover plate Preferably the oppositebearing ends 35 are out of contact with 'the adjacent faces l1 and 42 to permit adjustment of the spacing of the base portions 41 and i2 as will appear.

' The bearing rollers are held in their proper relative positions as thus described by a cage member 5() shown detached in Figure 2.V This cage member comprises a Vpair of plates 51 and 52, these plates being spaed by the spacing sleeves 53, so as to permit the larg-5e diameter portions of the rollers to pass therebetween. Each of these plates 51 and 52 has an outwardly extending circular boss 54 thereon, which is slotted radially to provide bearing seats 55 to take over theV bearing portions 35 and 36 of the rollers. ,Eachbf these members 51 and 52 is also provided with radially extending ears 56 between whichthe spacing sleeves 53 are positioned. these ears extending within the recess 51 betweeirits base and the cover plate 2O for free rotation thereinsg Both the members 51 and 52 are provided witha central open-ing 57 of ample size to permit the bearing portion of the shaft 5 to pass freely therethrough. ll`his cage, g

therefore, by reason ofits bearing portions 55, holds the several rollers in the two series in annular and spaced relation about the shaft 5, and asalternate rollers are reversed end for end, they are arranged in two series with their large diameter portions rolling against and inl axially spaced relation on the shaft 5, bearing on the oppositely tapered faces 32 and 33 of this shaft.V As all of these rollers have tapered faces Vl'iearing on the shaft, it is evident that by axial adjustment of the rollers relative to the shaft wear both radially and axially of the shaft may be taken up. Movement of the rollers Lindirections toward their tapered portions of smaller diameter will accomplish this purpose and .hence the'bearing portions 3 6 are intended to Contact with the corresponding Vwalls of the casing.` To provide for such.adjustment., it is preferable to employ a shim as at 60 bctween the cover 20 and the casing part 3, usingshims of decreasing thickness `as the bearing wears. rlhe wall portions which bear on the roller bearing ends 36 are then brought closer together thus to press the shaft bearing faces of the rollers of the two series further apart. Not only does this adjustment take upjwear, but it also prevents axial motion-of the shaft 5 when in operation. y

As such adjustment is usually sufficiently taken care of Vby a single bearingwhen provided withY tapered roller and shaft engaging portions a different roller construction may be utilized ordinarily in the opposite bearing as shown in the bearing 4. This'bearing may be Videntical withv that described 4inconnection with the bearing 3, except that each ofthe bearing rollers is provided with a large diameter shaft engaging portion 71 of cylindrical surface, which bears against a V'corresponding Vcylindrical surface 72 of the shaft. Here also a cage identical' with that VVshown in Figure 2 may beused, the bearing rollers being arranged in two series with their portions of large diameter lapping past each other. Here also a shim as 73 may be placed between the cover member 2O and the portion 7 though the .interchange ofshims in this case willnot act to take up radial wear between the shaft and its bearing.

Any suitable means may be provided forl lubricating .thebearings, aslherein shown a plug' 5 being used -to close an oil port leading into the chamber 15. Suitable washers of felt or similarma-terial as at 76 may be employed surrounding the shaft 5 to prevent theescape of oil lengthwise thereof. v

It will be seen from this construction that the rollers in each bearing are arranged in a pair olf-circular seriesxa-bout the shaft and that they have a planetary motion, moving about the shaft and rolling on theirbearingl portions about the annular bearing walls 16 v and 22. Preferably the large diameter portions .of` the rollers are of larger diameter than the matingportions of the shaft or spin- "lissage se I Vdle 5. vThus the angular speedof these rollers,'even if they were fixedstationary, as in my application hereinbefore mentioned, is lessthan that ofthe shaft, but as they rotate in planetary fashion about the shaft their y l vpri-sing a casing'having a pair of spaced'finspeed Vof vangular motion is further reduced and theirn bearing portions have rolling rather than rubbing friction.` e

The cage members being freely rotatable 4 about the shaft act only to hold therollers in proper spaced, relation toy each otherl and y therefore are relieved from any considerable amount of bearing pressure. The shaft,

therefore, has thevhighest surface speed of any portion of Vthegmechanism and consequ'ently can be driven'atea high speed, and the wear of parts is. reduced to such an extent that the life' of the bearing is much greater than as heretofore usuallyconstructed, wherein bearing balls, Vbecause of their relatively small diameter withv respect to the shaft, are compelledtorotate at extremely "high velocity,`- Iniuc h greater than that of the y n shaft itself.

Having thus `.described an embodiment of this invention, lit should vbe evident to those skilled in' the art, that various changes and modifications might be made without-depart,- ing from Yits spirit or scope as defined by the Iclaim: c, y Y

1. A mechanism of the class described comprising a casing having a pair of spaced Y internal annular walls, a shaft extending through said casing concentrically with said walls, rollers arranged yin a pairof series,

' each roller having portions of small diameter in rolling engagement with said walls and a portion of large diameter in rolling contact with said shaft, 'said large diameter portions of the rollers of the two series bearing on said shaft at different positions lengthwise thereof, saidlarge diameterportions and said shaft beingcomplementally bevelled at their engagement, the direction of bevelling being reversed atV said different lengthwise positions, and means fory holding said rollers against axial movement due to such bevelled engagement. v

2. A mechanism of the 'class described comprising a casinghaving a pair of spaced 1nternal .annular walls,

a shaft Vextending through said casing concentrically 'with said walls, rollers arranged in a pair of series, each roller having portions ofl small diameter in rolling engagement with said walls and a portion of large diameter in rolling contact with'said shaft, saidvlarge diameter portions of the rollers Yof the two series bearing on said shaft at different positions lengthwise thereof, said large diameter portions and said shaft being complementally bevelled at their engagement, the direction of bevelling being v reversed atsaiddiiferent lengthwise posii tions, and apair of spacedV surface elements,

'one end i of.- each roller of one seriesv bearing e on one of said surface elements and the corresponding end of each roller of thegother vseries `bearing on, thefother surface. element.

8.- A mechanism oftheclass described comternal annular'Y wall-s, a shaft extending with sai-'d shaft, said large diameter Vportions e v ofthe rollers of Vthe two series bearing on said shaft at different positions lengthwise thereof, said large diameter portions andi said "shaft lbeing complementally bevelled at their engagement,ithe direction of'bevelling being reversed at sra-id different lengthwise positions", apairfof spacedsiirfaee elements, one end! of eaeh rollerof one ser-ies bearingfon oneof said ,surface elements and the correspond-ing end of each rolle-r of the other-l series bearingl VQin-the other surface element, andl means by which said` surface elementslmay be a-fjllstably'spaced. Y A n 4. -A A'mechanism ofthe class described l comprising a two-part casing having lalpair Y of spaced internalfannular walls, a shaft extendfirjig through A saidV casing eoncentrilcallly with saidwalls, r-ollerseach havingportions 'of small diameter in rolling contact with said walls and a por-tion of large-'diameter in@ ifo-ll"- ing contact said; shaft-,ja cage-for holdfy 'ing saidfrolljersin a'pair ofseries'spaeed angularly about said shaft,fthle llargediameter *e portions ofthe rollers of one series llap1'aing theV correspondingportions of the rollers of the other series1 andv bearing on said sha-ft; at

a different lengthwise position-,said rollers i ifooV and vshaft beingv complementally bell'ed .at theirengaging portions and inopposite di- Y.

rection for the two series, said casing having surface portions on one of which one end of-` eachvroller of one kseries bears andon the through said casing concentrically with said walls, anda pairof seriesofrollers, each roller having a portion of large diameter-in rolling contact with said shaft and endpore tions'of small diameter of different lengths Von oppositev sides of said portion of large diameter riding on said walls, the long lends of all the rollers of one series and the short .im other of Whichone end of each roller of the 1 other series bears, and a shim positioned beends of all the rollers-of the other series ene gaging each of said walls, and the portionsy of larger diameter of one series being offset axially of said shaft relatively to the corree sponding portions'of the rollers of the other series. f

6. A mechanism of the class described comprising a casinghavinga pair of spaced internal annular Walls, a shaft extending through said casing concentrically With said Walls, and a pair Vof series of rollers, each 'roller having a portion of large diameter in Y rolling contact with said shaft and end portions of small diameter of different lengths on opposite sides of said portion of large v Y, I

diameter riding on said Walls, the long ends of all the rollers of one series and the short ends of all the rollers of the other series engaging each of said Walls, and the portions of larger diameter of 'oneseries being offset axially of said shaft r -3latively to the correspending portions of the rollers of the other series and in lapping relation therewith.

7. vA mechanism of the class* described comprising a casing having a pair of spaced internal annular Walls, a shaft extending through saidcasing concentrically With said Walls, and a pair of series of rollers, each roller having a portion of large dia-meter in rolling contact With said shaft and end portions of small diameter of different lengths on opposite sides of said portion of large diameterriding on said Walls, the long ends of all the rollers of one series and the short ends of all the rollers of the other series engaging each of said Walls, and the portions of larger diameter of one series being offset axially of saidshaft relativelyvto the corresponding portions of the rollers of the other series and engaging faces of said large diameter portions and said shaft being complementally beveled in opposite directions for the two series.

In testimony whereof I have aiixed my signature. l

WILLIAM LE ROY BRYANT. 

